Breast-auger tau



C. E. HOLT BREAST AUGER 'r April 16, 1929.

Filed June 28, 1927 Sway 4 .0.

Patented Apr. 16, 1923.

CORNELIUS ELDQN HOLT, OF LEETONIA, OHIO.

BREAST-AUGER T.

-Application filed June 28,

At the connection between a breast plate and a crank used to operatetools, breast auger Ts are employed to afford a socket in which one endof the cranl t seated. Heretofore, there has always been a large amountof friction at this'pointwhen the tool was operat d, being necessary, ofcourse, to overcome this friction in the working of the tool v Theprimary object of this invention is to provide a breast auger T whichW1ll eliminate to a large extent the friction between a crank and-saidT.

In carrying out the invention, there is provided in the T a ball whichis loosely fitted therein and against which the crank bears.

This invention is further characterized by the seating of a ball in sucha manner as to allow for lubrication thereof and removal of foreignmatter from the interior of the '5".

lVith these and otherv objects in View, as will in part hereinafterbecome apparent and in part be stated, the invention comprises certainnovel constructions, combinations and arrangements of parts assubsequently specified and claimed.

In the accompanying drawings Figure 1 is a perspective of a breast plateand tool with the improved auger T applied thereto. j

Figure 2 is a detailed end view of the T shown in Figure 1 with thebreast plate removed.

Figure 3 is a detailed side view F igure 4 is a. crank.

In the accompanying drawings and specification, like referencecharacters denote corresponding parts throughout.

.Vhile the preferred form of the invention is herein set forth, it is tobe understood that it is not to be limited to the exact construction setforth, because various modifications of these details may be provided inputting the invention into practice within the scope of the appendedclaim.

In the present embodiment of the invention there is shown the T 1applied to a breast plate 2, for use in connection with a single crank 3that operates an auger i. It is to be understood, however, that this Tmay be used in any form of supporting ofthe T. detailed end view of theplate, or with a suitable crank, either single or double, which is usedto operate any of a wide variety of rotatable tools.

1927. Serial No. 202,128.

Thecbreast plate 2, as shown in Figure 1, has the flanges 5 thereon tofit around the breast of a person, but this plate may be of any suitablec esign. One end of the crank, noted by the reference character 6, fitsin the breast auger "3' so that it may rotate therein. The novelconstruction of breast auger T eliminates to a large extent the frictionthat would ordinarily have to be overcome in the operation of the tool.Any well known form of connection between the crank 3 and tool l may beemployed.

The improved breast auger T comprises a main base or plate member 7 anda hollow tubular portion 8 that is integral with the base portion. Ateach end of the base portions, openings 9 are provided in which fitbolts or rivets that are used to secure the T to the breast plate. Thebore 10 of the tubular portion of the T is uniform throughout most ofits length. The bore 10 extends through the base portion of the T whereit is enlarged, as shown at 11. Between the bores 10 and 11 there is theinclined shoulder 12. The bore 11 is enlarged at the face of the aseplate, as shown at 13. On the upper face of the 32156 portion andintermediate the ends thereof, arched grooves 14 are provided. Thesegrooves run from the side of the base to the bore 11.

The ball 15 is loosely seated on the shoulder 12. It will be noted thatif the ball be placed in the T and is then secured to a breast plate,that the ball will be held securely in the T. The grooves 14 provide ameans by which a lubricant may be forced into the bore of the T aroundthe ball, well as to permit of the removal of any foreign matter thatmay collect therein.

hen the end portion 6 of the crank is fitted into the bore of the T itwill bear against this ball. The end of this crank is hollow orcup-shaped, as shown in Figure l. To secure the best results, however,it has been found that the end of the crank may be cut square and stilla large reduction in the force necessary to overcome the friction willbe obtained.

The bore 11 provides a recess for containing lubricant around the ball.It will be noted that as the ball is loosely fitted in the T that whenthe end of the crank bears against the ball it will be slightly unseatedfrom the shoulder 12. Due to this unseating and the movement of theball, which is caused by the rotation of the crank, lubrt lubricantbetween the end of the crank and ball engaging the end of the crank.

cant will be supplied to that portion of the This supply of lubricantwill be constantly replenished as the ball is moved around by the crank.There is, therefore, always some the ball against Which it bears.

Having thus described my invention, What I claim as new and desire tosecure by Letters Patent of the United States, is V A breast auger T ofthe class described, comprising, in combination, a breast plate,

a T socket member rigidly fastened thereto, a bore through the T socket,said bore havin an intermediate expanded portion, a further enlargedportion adjacent the breast plate, a shoulder connecting theintermediate portion with the bore, a bearing in the intermediateportion and retained at all times by the shoulder and breast plate, andopenings in the T socket member communicating with the enlarged bores.

In testimony whereof I aifix my signature.

CORNELIUS ELDON HOLT.

